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$280+ Cheap flights from Seattle (SEA) to Helsinki (HEL)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/6. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — HEL
Aug 22 — Aug 291
Sat 8/22
Sat 8/29
1 adult, Economy
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1. Tell us where you want to go

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Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Helsinki-Vantaa are usually found in January or December, booked 73 days in advance, depart on a Wednesday or Tuesday and return on a Monday

Cheap flight deals from Seattle to Helsinki

Cheapest flights from Seattle to Helsinki
Explore the most affordable flight options available from Seattle to Helsinki. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 23, 2026.

This oojo deal was found by Cheapflights users on 7/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/13:55 pm
SEA
-
HEL
2 stops13h 50m
Scandinavian Airlines
Tue 9/156:10 am
HEL
-
SEA
1 stop17h 35m
Scandinavian Airlines
Deal found 7/18$587
This oojo deal was found by Cheapflights users on 7/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/83:55 pm
SEA
-
HEL
2 stops13h 50m
Scandinavian Airlines
Fri 9/2511:05 am
HEL
-
SEA
2 stops36h 40m
Scandinavian Airlines
Deal found 7/19$636
This oojo deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/13:55 pm
SEA
-
HEL
1 stop13h 25m
Scandinavian Airlines
Thu 9/104:00 pm
HEL
-
SEA
1 stop31h 45m
Scandinavian Airlines
Deal found 7/20$640
This oojo deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/63:55 pm
SEA
-
HEL
1 stop13h 25m
Scandinavian Airlines
Wed 9/99:15 pm
HEL
-
SEA
2 stops50h 30m
Scandinavian Airlines
Deal found 7/22$646
This oojo deal was found by Cheapflights users on 7/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/283:55 pm
SEA
-
HEL
2 stops32h 05m
Scandinavian Airlines
Thu 9/179:15 pm
HEL
-
SEA
2 stops26h 30m
Scandinavian Airlines
Deal found 7/18$685
This Cheapflightsfares deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/253:55 pm
SEA
-
HEL
1 stop18h 30m
Scandinavian Airlines
Tue 9/16:10 am
HEL
-
SEA
1 stop17h 35m
Scandinavian Airlines
Deal found 7/23$718

Find flight deals from Seattle to Helsinki

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Helsinki (HEL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated July 23, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$587
(oojo)

One-way from

$280
(Kiwi.com)

Popular in

June

Cheapest in

January

Average price

$1,028

Good round-trip deal

$1,297 or less

Good one-way deal

$394 or less
Provider with most accurate pricing for Seattle/Tacoma Intl-Helsinki-Vantaa flight deals.
Search Deals
Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Helsinki-Vantaa flights.
Search Deals
From Seattle/Tacoma Intl to Helsinki-Vantaa
Search Deals
One-way flight from Seattle/Tacoma Intl to Helsinki-Vantaa
Search Deals
Highest demand for flights based on searches. 17% potential increase in price ($194 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($26 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
Search Deals
Price to beat on a round-trip flight from Seattle/Tacoma Intl to Helsinki-Vantaa.
Search Deals
Price to beat on a one-way flight from Seattle/Tacoma Intl to Helsinki-Vantaa.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Seattle to Helsinki that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 23, 2026.
Use the filters below to find and compare flights from Seattle to Helsinki that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleHelsinki

SEA - HEL

SEAHEL

Seattle/Tacoma Intl

Mon 9/7

7:15 am-3:45 pm

3 stops22h 30m

Helsinki-Vantaa

Mon 9/21

9:05 pm-1:45 pm

1 stop26h 40m

$799
Quickest round-trip

SeattleHelsinki

SEA - HEL

SEAHEL

Seattle/Tacoma Intl

Sun 10/18

3:40 pm-2:00 pm

1 stop12h 20m

Helsinki-Vantaa

Thu 10/22

3:00 pm-5:55 pm

1 stop12h 55m

$915
Cheapest one-way
Quickest one-way

SeattleHelsinki

SEA - HEL

SEAHEL

Seattle/Tacoma Intl

Tue 8/25

11:25 pm-1:30 am

2 stops16h 05m

$336

SeattleHelsinki

SEA - HEL

SEAHEL

Seattle/Tacoma Intl

Wed 8/26

7:00 pm-12:40 am

3 stops19h 40m

$386

SeattleHelsinki

SEA - HEL

SEAHEL

Seattle/Tacoma Intl

Thu 10/1

7:00 pm-2:00 pm

1 stop33h 00m

$394

SeattleHelsinki

SEA - HEL

SEAHEL

Seattle/Tacoma Intl

Sat 8/1

11:25 pm-1:30 am

2 stops40h 05m

$402

SeattleHelsinki

SEA - HEL

SEAHEL

Seattle/Tacoma Intl

Tue 8/4

11:25 pm-11:20 pm

3 stops37h 55m

$405

SeattleHelsinki

SEA - HEL

SEAHEL

Seattle/Tacoma Intl

Thu 8/6

7:00 pm-4:45 pm

2 stops35h 45m

$409

SeattleHelsinki

SEA - HEL

SEAHEL

Seattle/Tacoma Intl

Sat 8/15

6:50 pm-9:30 am

2 stops28h 40m

$409

SeattleHelsinki

SEA - HEL

SEAHEL

Seattle/Tacoma Intl

Thu 10/1

7:00 pm-1:30 am

3 stops20h 30m

$429

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/19

Showing 1-10 of 13 resultsSorted by cheapest first
1
2

Compare providers for flights from Seattle to Helsinki

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Seattle to Helsinki in July.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy2 starsTrust Score*1 star
JustAirTicketPrice Accuracy-Trust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Seattle-Helsinki flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Seattle-Helsinki flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Seattle-Helsinki flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Seattle-Helsinki flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Seattle-Helsinki flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Seattle to Helsinki

Have a flexible travel schedule? Discover the best time to fly to Helsinki from Seattle with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Seattle to Helsinki

How far ahead should I book a flight from Seattle to Helsinki?

The best time to book flights from Seattle to Helsinki is 70 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from Seattle to Helsinki?

Currently, January is the cheapest month in which you can book a flight from Seattle to Helsinki (average of $543). Flying from Seattle to Helsinki in June is currently the most expensive (average of $1,178). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from SEA to HEL?

Find hourly flight availability from Seattle to Helsinki. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 23, 2026.

When flying from Seattle to Helsinki, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

How much does it cost to fly round-trip from Seattle to Helsinki?

Reviews of airlines servicing Helsinki

Get insights into the airlines that provide service to Helsinki. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Helsinki. Reviews last updated July 23, 2026.
Get a feel of what it's like to fly with Delta,Finnair, andScandinavian Airlines from Seattle to Helsinki by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.8
Good
8,480 reviews

Entertainment

7.8

Overall

7.8

Food

7.2

Crew

8.5

Comfort

7.8

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional
Delta
7.8
Good
8,480 reviews
Delta
7.8
Good
8,480 reviews

Entertainment

7.8

Overall

7.8

Food

7.2

Crew

8.5

Comfort

7.8

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional
Finnair
7.6
Good
1,423 reviews
Delta
7.8
Good
8,480 reviews

Entertainment

7.8

Overall

7.8

Food

7.2

Crew

8.5

Comfort

7.8

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional
Scandinavian Airlines
7.4
Good
1,898 reviews
Delta
7.8
Good
8,480 reviews

Entertainment

7.8

Overall

7.8

Food

7.2

Crew

8.5

Comfort

7.8

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional
Icelandair
7.0
Good
717 reviews
Delta
7.8
Good
8,480 reviews

Entertainment

7.8

Overall

7.8

Food

7.2

Crew

8.5

Comfort

7.8

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional
British Airways
6.7
Okay
8,129 reviews
Delta
7.8
Good
8,480 reviews

Entertainment

7.8

Overall

7.8

Food

7.2

Crew

8.5

Comfort

7.8

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional

Related info for your journey

Find useful and relevant information for your journey from Seattle to Helsinki. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How popular is this Seattle to Helsinki flight route?

    This flight path from Seattle/Tacoma Intl to Helsinki-Vantaa was viewed by 1 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • How long is the flight from Seattle to Helsinki?

    Airlines like Scandinavian Airlines fly from Seattle to Helsinki in about 22h 30m. The time it takes to get you to your destination can typically vary by up to . Airlines will cover a distance of 4764 mi.

  • What are the cheapest airlines flying from Seattle to Helsinki round-trip?

    Cheapflights users have booked flights from Seattle to Helsinki round-trip from $328. Other airlines that can offer you cheap pricing are Icelandair, from $517, and Delta, from $526. Users have found that Scandinavian Airlines is 63% cheaper than the other options available to this destination.

  • What are the cheapest airlines to fly from Seattle to Helsinki one-way?

    The cheapest airlines for a one-way flight from Seattle to Helsinki are Finnair ($304), Lufthansa ($418), and Icelandair ($475).

  • What are the most reliable airlines from Seattle to Helsinki?

    Consider American Airlines (9%), Alaska Airlines (9%) or Finnair (9%) when booking your flight. These represent the most reliable airlines when flying from Seattle to Helsinki.

  • What are the cheapest flights from Seattle to Helsinki?

    The cheapest flight price from Seattle to Helsinki is $350. On average you can expect to pay $1,409. The most popular route, (Seattle/Tacoma Intl - Helsinki-Vantaa), can usually be booked for $640.

  • Can I find deals for flights from Seattle to Helsinki that include hotel bookings?

    Yes. In addition to deals on Seattle to Helsinki flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Seattle to Helsinki?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to Helsinki.

  • Can I find deals for business class flights from Seattle to Helsinki?

    Yes. Cheapflights offers flight deals from Seattle to Helsinki by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Seattle to Helsinki?

    Currently, January is the cheapest month in which you can book a flight from Seattle to Helsinki (average of $543). Flying from Seattle to Helsinki in June is currently the most expensive (average of $1,178). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Helsinki?

Book flights to Helsinki if you plan to visit one of these locations
Vantaa
Lahti

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Alternative routes for Seattle to Helsinki

See prices for flight routes from nearby airports that may be better suited for you.
Portland to Helsinki flights

Top 6 airlines flying from Seattle to Helsinki

Discover the top 6 airlines that operate flights from Seattle to Helsinki. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 23, 2026.
AirlineCheapestAverageFlexibilityOn-time
Scandinavian AirlinesCheapest$328Average$563FlexibilityNo cancel feeOn-time77%
IcelandairCheapest$517Average$876FlexibilityNo cancel feeOn-time76%
DeltaCheapest$526Average$1,020FlexibilityNo cancel feeOn-timeN/A
British AirwaysCheapest$725Average$1,148FlexibilityNo cancel feeOn-time70%
FinnairCheapest$790Average$1,183FlexibilityNo cancel feeOn-time76%
LufthansaCheapest$852Average$1,246FlexibilityNo cancel feeOn-time76%

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